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Single Tooth Anterior Crossbite — NDEB AFK MCQ

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EasyOrthodonticsSingle Tooth Anterior CrossbiteNDEB AFK

A 14-year-old patient has an anterior crossbite of one maxillary central incisor with adequate space in the arch. Which appliance is most appropriate for correction?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — Removable appliance with a Z-spring or finger spring

A single-tooth anterior crossbite with adequate space is efficiently corrected with a removable appliance incorporating an active component (Z-spring, finger spring, or screw) to tip the incisor labially. A posterior bite plane on the appliance disengages the occlusion to allow the tooth to move over the bite. This is a simple interceptive orthodontic treatment. Full fixed appliances are unnecessary for a single-tooth crossbite when space is adequate.

Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019